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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.cassandra.index.sai.analyzer;

import java.nio.ByteBuffer;

import com.google.common.base.MoreObjects;

/**
 * Default NoOp tokenizer. The iterator will iterate only once returning the unmodified input
 */
public class NoOpAnalyzer extends AbstractAnalyzer
{
    private ByteBuffer input;
    private boolean hasNext = false;

    public NoOpAnalyzer() {}

    @Override
    public boolean hasNext()
    {
        if (hasNext)
        {
            this.next = input;
            this.hasNext = false;
            return true;
        }
        this.next = null;
        return false;
    }

    @Override
    protected void resetInternal(ByteBuffer input)
    {
        this.input = input;
        this.hasNext = true;
    }

    @Override
    public boolean transformValue()
    {
        return false;
    }

    @Override
    public String toString()
    {
        return MoreObjects.toStringHelper(this).toString();
    }
}